What is worth measuring
User count is the easiest number to measure, and for that reason the most misleading.
At first I counted users. The number grew, and that felt good.
Then it turned out half of those who signed up never came back a second time. The number was growing but meant nothing.
A better number
For Navbat the most useful measure turned out to be "time saved": the gap between the booked time and the actual appointment. That number shows the platform is genuinely helping.
That is why the aggregate statistics on this site do not simply count users either. Each solution reports its own measure, and the site groups and sums them.